In Michigan: A New Fuels Paradise

"General Motors doesn't want people wandering around on their own in there," says a student guard. He points to the fence beyond which innocent-looking woods and fields stretch away through southern Michigan. The only authorized way in proves to be a shuttle bus. Bearing two Chrysler engineers and an average American car owner, pitifully eager for any word of mileage efficiency to come, it cruises along winding roads with nothing except trees in view. Nothing, that is, until the road opens on a vast stretch of black tarmac, 67 acres of it, set...